It's not meaningless; it's just not very meaningful. You can doctor the phrasing to filter out the specific issues you raised (hence, "or similar"). More import

It's not meaningless; it's just not very meaningful. You can doctor the phrasing to filter out the specific issues you raised (hence, "or similar"). More importantly though, it's never going to be a perfect metric because there is some inherent subjectivity; however, it's still far more meaningful than the current question. There is a difference between "meaningless" and "not 100% meaningful".